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Old Friday, March 13, 2009
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(a) Name the organs responsible for the following functions present in either elements, plants or human.

a)vision
b)reproduction
c)hormone secretion
d)blood pumping
e)food storage

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(iii) Large trees give off aerial roots for the support of their heavy spreading branches.?

(i) Active transport in animals and plants required metabolic energy and _concentration gradient to carry the substances across cell membranes electrical gradient.

(ii) Diseases that spread through air are called Air born diseases disease.

Last edited by Princess Royal; Friday, March 13, 2009 at 09:51 PM.
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